DOI: 10.1051/jp2:1992183
J. Phys. II France 2 (1992) 1007-1021
Perfect plasticity in a random medium
Stéphane Roux1 and Alex Hansen21 HLRZ, KFA Jülich, Postfach 1913, D-5170 Jülich, Germany
2 Fysisk Institutt, Universitetet i Oslo, Postboks 1048 Blindern, N-0316 Oslo, Norway
(Received 12 November 1991, accepted 8 January 1992)
Abstract
We study numerically a simple network model which is an electrical analog of a perfectly plastic disordered medium. For a
uniform random distribution of local maximum current, (e.g. yield stress), we study the evolution of the properties of the
system as a function of the number of elements which reached the plastic limit. It is shown that the macroscopic yield point
can be interpreted as a critical point.
62.20F - 64.60A
© Les Editions de Physique 1992